This scenario details how to connect an IPv6 enabled site which has no native IPv6 internet service to connect to a remote IPv6 routing service to facilitate end to end IPv6 transport, thus avoiding the need for NAT64.
Hurricane Electirc (http://ipv6.he.net/) offers an excellent free service which allows for the use of global routable IPv6 address on your network through the use of its Tunnelbroker service (http://www.tunnelbroker.net/).
Once signed up you will allocated one /64 prefix to be used by your router and a single VLAN, but if you would like IPv6 on additional VLANs there is also a /46 prefix.
To make use of the IPv6 default route made available via the tunnel, OSPFv3 is used between the 1841 and ASA .
|Server IPv6 address||2001:470:bbbb:aaaa::1/64|
|Client IPv6 address||2001:470:bbbb:aaaa::2/64|
! ipv6 unicast-routing ipv6 cef ! interface Tunnel1 description HE IPV6 Tunnel no ip address ipv6 address 2001:470:bbbb:aaaa::2/64 ipv6 enable tunnel source FastEthernet0/0 tunnel destination 220.127.116.11 tunnel mode ipv6ip ! interface FastEthernet0/0 ip address dhcp client-id FastEthernet0/0 duplex auto speed auto ipv6 address 2001:470:ffff:aaa1::1/64 ipv6 enable ipv6 ospf 1 area 0 ! ! ipv6 route ::/0 Tunnel1 ipv6 router ospf 1 router-id 18.104.22.168 log-adjacency-changes default-information originate always redistribute connected redistribute static !
OSPFv3 which supports IPv6 addresses is only available on versions 9.x of the ASA firmware.
! interface Vlan10 nameif outside ipv6 address 2001:470:ffff:aaa1::2/64 ipv6 ospf cost 1 ipv6 ospf 1 area 0 ! interface Vlan30 nameif inside security-level 100 ipv6 address 2001:470:ffff:aa30::1/64 ipv6 nd prefix 2001:470:ffff:aa30::/64 ! ipv6 router ospf 1 router-id 22.214.171.124 log-adjacency-changes redistribute connected !